US2738259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of germanium
Assignee: Raytheon Co
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Filing: 1954-02-24
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Granted: 1956-03-13
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Expires: 1974-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Ray C Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:47
CPC Classifications
C; C23; C23F; C23F1/00; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
THE METHOD OF IMPROVING THE ELECTRICAL CHARACTERISTICS OF A GERMANIUM BODY, SAID METHOD COMPRISING SUBJECTING THE SURFACE OF SAID BODY TO A FLUID MIXTURE FROM WHICH EXCESS GERMANIUM IS READILY RECLAIMABLE, SAID FLUID MIXTURE BEING COMPRISED OF A POLYHYDROXY COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUGARS AND GLYCOLS, AND A COMPATIBLE OXIDIZING AGENT, AND THEN WASHING SAID FLUID MIXTURE FROM SAID SURFACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |